Avoid potential risks when transporting certain solids with Labelmaster's Dangerous When Wet Blank Placards. Ample space is provided for you to include the UN Number, and these DOT placards meet the requirements of 49 CFR 172.500 for domestic and international shipments of hazardous materials by highway, rail and water. Using UV inks that retard peeling, chipping and fading, they are printed on highly durable removable vinyl that is ideal for limited time use, and can be removed with little or no residue. Blue and white, these Hazard Class 4 placards measure 273 x 273mm and are sold in packs of 25 or cases of 900.